Title:
DEVICE AND METHOD OF PATTERN-DRAWING ARTICLE FROM SHEET MATERIAL
Document Type and Number:
Japanese Patent JPS6186033
Kind Code:
A
Abstract:
Apparatus and method for forming disks or other articles from flexible sheet material. The disks can be used, for example, as substrates of magnetic recording disks known as floppy disks. The apparatus includes an upper die plate shiftably mounted above a lower die plate and having a die thereon so that a strip of material moveable between the die plates can be sequentially die-cut to form the disks. The upper die plate has quick release latches attaching the upper die plate to a support so that, when the latches are retracted, the upper die plate can be quickly and easily removed from the apparatus to permit the die to be sharpened or replaced. The apparatus includes air delivery ports near the upper and lower die plates to direct air under pressure against a disk after it has been die-cut from the strip so that the disk will be moved laterally and into a chute and onto a spindle which receives a stack of the disks. The strip is incrementally unwound from a roll and forms a low-tension loop near the entry point between the upper and lower die plates. The loop is controlled by an electric eye device which senses the presence or absence of the loop. A pair of adjacent pressure rollers receive and frictionally engage the strip near the opposite end of the apparatus to incrementally pull the strip past the die plate. A timing device controls the advancement of the strip, the lowering of the upper die plate, and the blowing of air against the disks after they are die-cut.
Inventors:
KAATO UORUDONAA
Application Number:
JP12909185A
Publication Date:
May 01, 1986
Filing Date:
June 13, 1985
Export Citation:
Assignee:
KAATO UORUDONAA
International Classes:
B26F1/14; B21D28/02; B23D35/00; B26D7/18; B26F1/40; B65H23/185; (IPC1-7): B21D28/02; B26F1/14
Attorney, Agent or Firm:
Kyozo Yuasa